In 2013, freshmen senators Ted Cruz (R-Tex.) and Rand Paul (R-Ky.) seemed like two peas in a pod. Both railed at the NSA, backed the government shutdown, opposed intervention in Syria and championed the tea party faithful. But 2014 has been a different story. Cruz has become a serious, vocal proponent of a tough foreign policy and harsh critic of President Obamas approach to Iran and Russia.